MARIA CRISTINA CHAVANTES
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- Is it possible to prevent morbidity on post cardiovascular surgery applying low level laser therapy?(2014) PINTO, Nathali Cordeiro; BAPTISTA, Ivany Machado de Carvalho; PEREIRA, Mara Helena Corso; SERRAO JUNIOR, Nelson Francisco; POMERANTZEFF, Pablo M. A.; CHAVANTES, Maria CristinaBackground and Objective: Complications following cardiovascular surgery incision are common in mediastinitis and wound dehiscence form, a 47% mortality rate remaining. Low Level Laser Therapy (LLLT) has been employed mainly to its effectiveness analgesic and anti-inflammatory actions, aiding the tissue repair process. The aim of this study was to evaluate infrared LLLT onto surgical incision in patients submitted to cardiovascular surgery. Materials and Methods: 40 patients were divided in two groups: Placebo Group (G1) - conventional therapy + ""Laser pointer"" and Laser Group (G2) - conventional therapy + Infrared Laser irradiation on surgical incision. Diode Laser was employed, C. W. mode, around the surgical wound bed, on immediate Post Operative (PO), 1st PO and 3rd PO with the following parameters: wavelength (lambda): 830nm, P=35mW, E=0,75J. Results: G2 didn't present any complication and 5% of patients in G1 developed incision dehiscence and infection. On 7thPO, still a large amount of G1 patients showed pain and unquestionable inflammatory signs surrounding the surgical wound, when compared to G2. Besides, hospital stay in Laser Group was 2 times shorter than in Placebo Group (p-value=0.001). Conclusion: Infrared Laser denoted to be safe and exceptionally valuable tools in preventing morbidities on post cardiovascular surgeries.
conferenceObject LASER THERAPY: AN ADJUVANT TREATMENT IN ACUTE AND CHRONIC WOUNDS REPAIRING(2013) BAPTISTA, Ivany; CHAVANTES, Maria Cristina; PINTO, Nathali; MONETTA, LinaconferenceObject LOW LEVEL LASER THERAPY IMPROVES CARDIOVASCULAR AUTONOMIC ACTIVITY IN SPONTANEOUSLY HYPERTENSIVE RATS(2015) SILVA, Bianca; TOMIMURA, Suely; SANCHES, Iris; CANAL, Marina; PINTO, Nathali; MADI, Otavio; CONTI, Felipe; ANGELIS, Katia De; COLOMBO, Fernanda; CHAVANTES, M. CristinaconferenceObject LOWLEVEL LASER THERAPY CAN IMPROVE THE THYROID VASCULARIZATION IN PATIENTS WITH CHRONIC AUTOIMMUNE THROIDITIS(2012) HOEFLING, Danilo; CHAVANTES, Maria Cristina; JULIANO, Adriana; CERRI, Giovanni; KNOBEL, Meyer; YOSHIMURA, Elisabeth; CHAMMAS, Maria CristinaBackground: Chronic autoimmune thyroiditis (CAT) frequently alters thyroid vascularization, likely as a result of the autoimmune process. Therefore, the objective of this study was to evaluate the effects of low-level laser therapy (LLLT) on the thyroid vascularization of patients with hypothyroidism induced by CAT using color Doppler ultrasound parameters. Study: A randomized clinical trial was conducted from 2006 to 2009 at the Hospital das Clínicas, University of Sao Paulo Medical School. Forty-three patients who underwent levothyroxine replacement for CAT-induced hypothyroidism were randomly assigned to receive either 10 sessions of LLLT (L group, n=23) or 10 sessions of a placebo treatment (P group, n=20). Color Doppler ultrasounds were performed before and 30 days after the end of the interventions. All of the patients in both groups continued taking their previous levothyroxine doses for the duration of the study. To verify the vascularization of the thyroid parenchyma, power Doppler was performed. The systolic peak velocity (SPV) and resistance index (RI) in the superior and inferior thyroid arteries were measured by pulsed Doppler. Results: All of the patients completed the study. The frequency of normal vascularization of the thyroid lobes observed in the post-intervention power Doppler examination was significantly higher in the L than in the P group (P=0.023). The pulsed Doppler examination revealed an increase in the SPV of the inferior thyroid arteries in the L group compared with the P group (P=0.016), whereas no significant difference in the SPV of the superior thyroid arteries was found between the groups. There was also no significant difference in the RI between the groups. Conclusion: These results suggest that LLLT can ameliorate thyroid parenchyma vascularization and increase the SPV of the inferior thyroid arteries of patients with hypothyroidism caused by CAT.conferenceObject ANALYSIS OF OPTICAL DOSIMETRY IN RAT-TAIL MAY CORROBORATE TRANSCUTANEOUS LOW-LEVEL LASER THERAPY IN BLOOD RESPONSE(2013) SOUSA, Marcelo; PINTO, Nathali; YOSHIMURA, Elisabeth; CANAL, Marina; NAKATA, Leticia; PEREIRA, Mara; MARTINS, Luis; CHAVANTES, Maria Cristina- Post-operative uses of low-level laser therapy(2016) CHAVANTES, M. C.; PINTO, N. C.; HOLANDA, V. M.In our surgical experience, the use of low-level laser therapy (LLLT) can decrease complications in several major surgeries such as neurosurgery, major abdominal surgery (bariatric surgery), breast reconstruction (TRAM flap) surgical procedures, major burn surgery, and thoracic-cardiovascular surgery. LLLT can accelerate tissue repair, facilitating cicatrization and providing an analgesic effect in post-surgical pain. LLLT can also prevent morbidity, avoiding undesirable outcomes that could be evolving to post-operative death [1]. Although no single tool or technique is yet available to address the many complex issues surgeons face in their everyday practice, this remarkable devicemay be highly beneficial for patients by mitigating their suffering and quite rewarding for doctors. © 2017 Pan Stanford Publishing Pte. Ltd.
conferenceObject LONG-TERM FOLLOW-UP OF PATIENTS WITH HYPOTHYROIDISM INDUCED BY AUTOIMMUNE THYROIDITIS SUBMITTED TO LOW-LEVEL LASER THERAPY(2017) HOFLING, Danilo; CHAVANTES, M. Cristina; BUCHPIGUEL, Carlos Alberto; CERRI, Giovanni Guido; CARNEIRO, Paulo Campos; MARUI, Suemi; CHAMMAS, Maria CristinaconferenceObject HEMODYNAMIC CHANGES POST LOW LEVEL LASER THERAPY IN ELDERLY OBESE RATS: AN EXPERIMENTAL STUDY(2013) CANAL, Marina; CONTI, Filipe; PINTO, Nathali; PINTO, Michael; SILVA, Bianca; SANCHES, Iris; DUARTE, Ivone; ANGELIS, Katia De; CONSOLIM-COLOMBO, Fernanda; CHAVANTES, Maria Cristina- Hemodynamic Effect of Laser Therapy in Spontaneously Hypertensive Rats(2014) TOMIMURA, Suely; SILVA, Bianca Passos Assumpcao; SANCHES, Iris Callado; CANAL, Marina; CONSOLIM-COLOMBO, Fernanda; CONTI, Felipe Fernandes; ANGELIS, Katia De; CHAVANTES, Maria CristinaSystemic arterial hypertension (SAH) is considered to be the greatest risk factor for the development of neuro-cardiovascular pathologies, thus constituting a severe Public Health issue in the world. The Low-Level Laser Therapy (LLLT), or laser therapy, activates components of the cellular structure, therefore converting luminous energy into photochemical energy and leading to biophysical and biochemical reactions in the mitochondrial respiratory chain. The LLLT promotes cellular and tissue photobiomodulation by means of changes in metabolism, leading to molecular, cellular and systemic changes. The objective of this study was to analyze the action of low-level laser in the hemodynamic modulation of spontaneously hypertensive rats, in the long term. Animals (n = 16) were randomly divided into the Laser Group (n = 8), which received three weekly LLLT irradiations for seven weeks, and into the Sham Group (n = 8), which received three weekly simulations of laser for seven weeks, accounting for 21 applications in each group. After seven weeks, animals were cannulated by the implantation of a catheter in the left carotid artery. On the following day, the systemic arterial pressure was recorded. The Laser Group showed reduced levels of mean blood pressure, with statistically significant reduction (169 +/- 4 mmHg* vs. 182 +/- 4 mmHg from the Sham Group) and reduced levels of diastolic pressure (143 +/- 4 mmHg* vs. 157 +/- 3 mmHg from the Sham Group), revealing a 13 and 14 mmHg decrease, respectively. Besides, there was a concomitant important decline in heart rate (312 +/- 14 bpm vs. 361 +/- 13 bpm from the Sham Group). Therefore, laser therapy was able to produce hemodynamic changes, thus reducing pressure levels in spontaneously hypertensive rats.
conferenceObject LOW LEVEL LASER THERAPY'S EFFECT RELATING TO THE ELECTROMYOGRAPHIC ACTIVITY AND THE POSTURE IN THE TEMPOROMANDIBULARS DISORDERS: PILOT STUDY(2012) SERRAO, Nelson; MARTINICHEN, Marcia; MAGNANI, Rina; PINTO, Nathali; CHAVANTES, Maria Cristina
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